Robtex

Up: 203.198.128.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 203.198.132.0/23
Down right: 203.198.134.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
203.198.132.1	A+PTR	001.132.198.203.static.netvigator.com
203.198.132.1	A	aworklan022001.netvigator.com
203.198.132.2	A+PTR	002.132.198.203.static.netvigator.com
203.198.132.3	A+PTR	003.132.198.203.static.netvigator.com
203.198.132.4	A+PTR	004.132.198.203.static.netvigator.com
203.198.132.5	A+PTR	005.132.198.203.static.netvigator.com
203.198.132.11	A+PTR	011.132.198.203.static.netvigator.com
203.198.132.12	A+PTR	012.132.198.203.static.netvigator.com
203.198.132.13	A+PTR	013.132.198.203.static.netvigator.com
203.198.132.14	A+PTR	014.132.198.203.static.netvigator.com
203.198.132.62	A	ns2.hxghk.com
203.198.132.70	A	aworklan022070.netvigator.com
203.198.132.73	PTR	073.132.198.203.static.netvigator.com
203.198.132.73	A	japtou.com
203.198.132.75	PTR	075.132.198.203.static.netvigator.com
203.198.132.75	A	mail.minilogic.com.hk
203.198.132.75	A	www.minilogic.com.hk
203.198.132.172	PTR	172.132.198.203.static.netvigator.com
203.198.132.172	A	mx.waysmarket.com
203.198.132.172	A	mx.heartidea.com
203.198.132.182	A	aworklan022182.netvigator.com
203.198.132.185	A	185.132.198.203.static.netvigator.com
203.198.132.189	PTR	mail.cysarch.com.hk
203.198.132.196	PTR	196.132.198.203.static.netvigator.com
203.198.132.196	A	mail.fedcomx.com
203.198.132.196	A	mail2.corapeak.com
203.198.132.204	A+PTR	mail.fcsgroup.com.hk
203.198.132.204	A	fcsgroup.com.hk
203.198.132.225	A	aworklan022225.netvigator.com
203.198.132.235	PTR	mail.bizatom.com
203.198.132.235	PTR	mail.lab-partners.com
203.198.133.1	A+PTR	001.133.198.203.static.netvigator.com
203.198.133.2	A+PTR	002.133.198.203.static.netvigator.com
203.198.133.3	A+PTR	003.133.198.203.static.netvigator.com
203.198.133.4	A+PTR	004.133.198.203.static.netvigator.com
203.198.133.5	A+PTR	005.133.198.203.static.netvigator.com
203.198.133.11	A+PTR	011.133.198.203.static.netvigator.com
203.198.133.12	A+PTR	012.133.198.203.static.netvigator.com
203.198.133.13	A+PTR	013.133.198.203.static.netvigator.com
203.198.133.14	A+PTR	014.133.198.203.static.netvigator.com
203.198.133.15	A+PTR	015.133.198.203.static.netvigator.com
203.198.133.40	PTR	mail.intersales.com.hk
203.198.133.91	A	mail.ececbuy.com
203.198.133.91	A	ececbuy.com
203.198.133.99	PTR	099.133.198.203.static.netvigator.com
203.198.133.102	A	aworklan023102.netvigator.com
203.198.133.132	A	hktakeone.com
203.198.133.132	A	office.hktakeone.com
203.198.133.134	A	realbase.com.hk
203.198.133.136	A+PTR	mail.evergrowth.com.hk
203.198.133.142	A	142.133.198.203.static.netvigator.com
203.198.133.170	A+PTR	mail.toclegal.com.hk
203.198.133.184	PTR	184.133.198.203.static.netvigator.com
203.198.133.184	A	nsig2.compsofthk.com
203.198.133.184	A	nshkcity1.compsofthk.com
203.198.133.232	A+PTR	232.133.198.203.static.netvigator.com
203.198.134.1	A+PTR	001.134.198.203.static.netvigator.com
203.198.134.2	A+PTR	002.134.198.203.static.netvigator.com
203.198.134.3	A+PTR	003.134.198.203.static.netvigator.com
203.198.134.4	A+PTR	004.134.198.203.static.netvigator.com
203.198.134.5	A+PTR	005.134.198.203.static.netvigator.com
203.198.134.5	A	aworklan024005.netvigator.com
203.198.134.11	PTR	mail.medinet.com.hk
203.198.134.12	A+PTR	012.134.198.203.static.netvigator.com
203.198.134.13	A+PTR	013.134.198.203.static.netvigator.com
203.198.134.14	A+PTR	014.134.198.203.static.netvigator.com
203.198.134.22	A	mail.friendsoftheharbour.org
203.198.134.28	PTR	mail.regalway.com
203.198.134.31	A	marksixserver.com
203.198.134.31	A	dragonboatclub.com
203.198.134.42	A	aworklan024042.netvigator.com
203.198.134.49	PTR	049.134.198.203.static.netvigator.com
203.198.134.63	PTR	mail.silverbell.com.hk
203.198.134.122	PTR	122.134.198.203.static.netvigator.com
203.198.134.122	A	liveseafooddirect.com
203.198.134.122	A	fegrp02.fareastgroup.com
203.198.134.128	A+PTR	cfmgt.com.hk
203.198.134.195	A+PTR	195.134.198.203.static.netvigator.com
203.198.135.1	A+PTR	001.135.198.203.static.netvigator.com
203.198.135.2	A+PTR	002.135.198.203.static.netvigator.com
203.198.135.3	A+PTR	003.135.198.203.static.netvigator.com
203.198.135.4	A+PTR	004.135.198.203.static.netvigator.com
203.198.135.5	A+PTR	005.135.198.203.static.netvigator.com
203.198.135.11	A+PTR	011.135.198.203.static.netvigator.com
203.198.135.12	A+PTR	012.135.198.203.static.netvigator.com
203.198.135.13	A+PTR	013.135.198.203.static.netvigator.com
203.198.135.14	A+PTR	014.135.198.203.static.netvigator.com
203.198.135.59	A	aworklan025059.netvigator.com
203.198.135.114	A+PTR	114.135.198.203.static.netvigator.com
203.198.135.114	A	comfortech.com.hk
203.198.135.204	PTR	204.135.198.203.static.netvigator.com
203.198.135.204	A	tenonpolert.com
203.198.135.207	PTR	mail.medialink.com.hk
203.198.135.210	A+PTR	210.135.198.203.static.netvigator.com
203.198.135.210	A	pioneer-corp.com